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Fabrication of Grain Refining Machine
2020Food grains are the primary need of living beings. To obtain grain in the purest form i.e. (Without any impurities). The food grains which comes after threshing contains lot of impurities such as ferrous materials, straw, dust and dirt. We are designed a machine which can segregate these impurities from the grains with the help of magnetic roller and ...
Sana, Tarique +4 more
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Grain refinement in undercooled nickel
Scripta Metallurgica et Materialia, 1995In this paper, the microstructures of undercooled Ni that solidified at various initial bulk undercoolings are examined in detail in order to understand the mechanism of grain refinement in metallic systems. Molten Ni contracts on solidification. In the experiment, since it was covered by molten glass flux, upon crystallization cavities had to form to ...
K.K. Leung, C.P. Chiu, H.W. Kui
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2016
Grain refinement of aluminium has been studied in terms of its mechanism and its effect on the castability of foundry alloys.It is shown that both potent nucleant substrates, of which TiB2 is the most commonly used, and the presence of segregating elements are essential for grain refinement.
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Grain refinement of aluminium has been studied in terms of its mechanism and its effect on the castability of foundry alloys.It is shown that both potent nucleant substrates, of which TiB2 is the most commonly used, and the presence of segregating elements are essential for grain refinement.
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Grain refinement in electrogalvanized coatings
Materials Characterization, 2003Abstract The effects of grain-refining additives on the morphology and surface roughness of zinc deposits plated at 80 A/dm 2 is presented. Atomic force microscopy (AFM) images show zinc deposits plated without additives are rough and are not of commercial quality.
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The mechanisms involved in the grain refinement of magnesium alloys were investigated. Based on the findings, several attempts were made to develop a new, reliable grain refinement method, or maximise on existing method, for various magnesium alloys. The magnitude of grain growth during the solution heat treatment was investigated first so that more ...
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Grain Refining of Pure Aluminum
2012Grain refiners are currently used in casting aluminum alloys to reduce the grain size and to produce equiaxed grains during solidification of the alloys. Using inoculants to refine grains makes alloys castable but produces several disadvantages, including particle agglomerates, local defects, and impurities.
L. Han +6 more
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A new approach to the analysis of grain refinement
2007Grain refinement of aluminium and magnesium alloys has been a challenging topic for decades and this is partly due to the complex nature of the mechanisms occurring during solidification and the lack of a common experimental method allowing comparison of data from different research groups.
StJohn, D. H. +3 more
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Master Alloys for Grain Refinement
2019Master alloys are routinely added into aluminum melts before casting for grain refinement purposes. The widely used master alloys contain titanium and boron in the forms of Al3Ti and TiB2 particles in an aluminum matrix. Upon addition into aluminum melts, Al3Ti dissolves into the aluminum melts and promotes the heterogeneous nucleation of the α-Al ...
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Efficient grain refinement of Al alloys induced by in-situ nanoparticles
Journal of Materials Science and Technology, 2022Hongxiang Jiang, Jiuzhou Zhao
exaly